Liquid-fuel-heating burner.



M. GRAETZ. LIQUID FUEL HEATING BURNER. APPLICATION FILED JAN. 6, 1908.9%7385 1 Patented July 13, 1909.

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LIQUID FUEL HEATING BURNER.

APPLICATION FILED JAN. 6, 1908.

Patented July 13, 1909.

2 SHEETS-SHEET 2.

ANDREW. a. (mum no PNOYO-LITMOGRA MAX GRAETZ, OF BERLIN, GERMANY.

LIQUID-FUEL-HEATING BURNER.

Specification of Letters Patent.

Patented July 13, 1909.

Application filed January 6, 1908. Serial No. 409, 92.

T 0 all whom it may concern:

Be it known that I, MAX Gnan'rz, a subject of the King of Prussia,German Emperor, and a resident of 92, 93 Elsenstrasse, Berlin, Kingdomof Prussia, German Empire, have invented certain new and usefulImprovements in Liquid-F11el-Heating Burners, of which the following isan' exact specification.

This invention relates to the burners used in petroleum and like heatingstoves and the object of the present invention is to provide an improvedform of burner in which the flame spreads well outward in ellipsoidalform and at the same time improved mixing of the vapor and air isobtained. This result is secured by arranging the main gas and vaporoutlets from the burner head in the form of narrow slits arranged. in ahorizontal zone and extending in their length from the upper to thelower parallel of the zone. The arrangement of the. gasifying chamberand the method of heating this chamber is substantially the same as hashitherto been employed.

Referring now to the accompanying drawings, Figure 1 is a sectional sideView of the burner, Fig. 2 is a side View partially sectioned. Fig. 3 isa section on line X-X of Fig. 1. Fig. 4 is a detail view of the burnerhead alone, showing modifications in the arrangement of the main slitsand the auxiliary flame outlets. Fig. 5 is a cross section of the wholestove arrangement. Fig. 6 is a longitudinal section of the samearrangement.

In the drawings (t represents the main oil supply pipe connecting theoil reservoir with the gasifying chamber. At the end of this supply pipea U-shaped pipe Z) is attached at right angles. This pipe b leads intothe bottom of the gasifying chamber 0. From the bottom of this gasifieranother U-shaped pipe (Z extends downward and is disposed at rightangles to the oil pipe I). This pipe (Z serves the purpose of conductingthe gases produced in the gasifying chamber 0 to the nozzle 6, which isattached to said pipe in the bend of the U. A short distance above theoutlet opening of said nozzle the mixing tube fis located. This tube isopen at the bottom, so that, together with the gases ascending from theoutlet of the nozzle, air streams in and mixes with said gases withinsaid tubef. The mixing tube f extends into the burner head which is inits interior of dome shape. The mixing tube is attached to the innerwall 9 of this dome-shaped chamber which wall also forms a protectingchamber around the mixing tube. The burner cap proper that is theoutside wall of the dome-shaped chamber consists of cup-shaped sidewalls 7L and a closed upper part or cover i.

The lower part it of the burner head is provided with a number ofvertically arranged narrow slits is through which the mixed gas and airpass into the region of combustion. These slits are arranged in a beltor zone around the chamber and their length extends from the upper tothe lower parallel of this zone. Arranged in a line near the lower endof the slots, are the nozzle holes m. Through these holes issue separatesmall tongues of llame, and due to the downward inclination of the holesthese tongues are directed against the gasifier chamber and upwardlydished flange a attached to the top of the gasifying chamber 0. In Fig.2 the auxiliary flame holes are shown arranged between the ends of theslits 76. In Fig. 4 they are shown on the left hand side as arranged onthe end of all the slits while at the righthand side holes n are onlyprovided on alternate slits. The method of applying this improved burnerto a cooking stove is shown in Figs. 5 and 6. In these figures 0 is anoil reservoir, to the bottom of which the main supply pipe (L isconnected. On top of the reservoir an air pump 7) is provided forforcing the supply of compressed air to the reservoir 0 in the usualmanner.

The stove consists of the main frame q open on the top and resting uponthe feet 7'. \Vithin this frame one or several burners of the typedescribed above are arranged, these burners being supplied from thereservoir. Below each burner head an open pan .9 is arranged attached tothe main stove frame by means of brackets t. Into each pan a tray adisposed at an inclination and fastened to the upper stove frame (1leads, which tray extends beyond and outside the frame, where it forms alip. Through the tray liquid fuel such as alcoholfor instance is pouredinto the open pan and this fuel is lighted before the burner is started.The whole tray and pan arrangement just described serves the purpose ofpreheating the oil in the gasifying chamber and the pipes next to itbefore the burner is started for the purpose of starting the action ofthe burner which thereafter proceeds automatically.

I claim A petroleum burner for cooking and heating purposes, comprisinga gasifying chama ring near the lower ends of said slits to di- 10 herto which l1qu1d fuel is led, an upwardly rect small tongues of flameagalnst the gasldished flange on said gasifier, a nozzle comfier and theupwardly dished flange.

lnunicating with said gasifier, a mixing tube In witness whereof I havehereunto set my into which said nozzle directs the oil-vapor, hand inthe presence of two Witnesses.

a burner-head above said gasifier and com- MAX GRAETZ.

prising side-walls and a closed top plate, said l/Vitnesses:

side walls having slits arranged at a short HENRY HASPER,

distance apart, and nozzle holes arranged in VVOLDEMAR HAUPT.

